Ring-mandrel.



Jannes Hanson', or ORANGE, TEXAS.

RING-MANDREL.

Specification of Letters Patent.

Patented Apr.. 3U, 19M.

Application led July 5, 1917. Serial No. 178,751.

y of the United States, residin at Orange, in

the county of Orange and tate of Texas, has ,invented certain new anduseful llmprovements in Ring-Mandrels; and he does l hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same, vreference being-had to the accompanyingdrawings, and to the letters and figures of reference marked thereon,which form a part of this specification'.

.This invention relates to new and useful improvements in rin mandrels,for use in shaping up and roun ing and dressing bands of differentdiameters and consists essentially of a conical shaped member having aseries of concentrics dividing the entire surface into a seriesl ofcylindrical sections,

each adapted to form and shape a ring of a certain diameter. Heretofore,it has been common in the practice in constructing man- -drels for thispurpose, to make the same cylindrical shaped with a continuous unbrokeninclined surface formed end to end, thus making it impossible to' shapea band of cylindrical outline.

My invention comprises various details of construction combinations andarrangements of arts which will be hereinafter fully descrlbed, shown inthe accompanying drawings and then specifically defined in the appendedclaim.

My invention is illustrated in the accom `panying drawings which, withthe letters of reference marked thereon, form a part of thisspecification and in which:

Figure 1 is an elevation of a mandrel made in accordance with myinvention.

Fig. 2 is a vertical central sectional view.

Reference now being had to the details-of the drawings by letter:

A designates a mandrel of conical shape provided of solid metal andhaving a longitudinal tongue groove B formed therein, said mandrel isdivided into a series of cylindrical outlined portions each concentricand each of a-distinct diameter, separated bythef shoulders D.

In operation, it will be noted, that `a ring or band may be placed uponthe mandrel and hammered up while the metal ofthe band or ring is hot,and when the band is shaped it will have a true cylindrical form,

Vhat I claim to be new is:

As an article of manufacture, a ring Inandrel having an enlargedcylindrical base portion and adapted to extend vertically, said anvilmade up of a series of superimposed cylindrical portions ofy graduallydiminishing diameters with inclinedshoulders intermediate thecylindrical portions,v the portion of the anvil above the uppermostinclined shoulder being cylindrical outlined for a slight distance, andthence tapering to a point.

In testimony whereof I hereunto aiix my signature in presence of twowitnesses.

JAMES HINSON.

Witnesses:

L. F. STnrHEN'soN, W. L. MoALIs'rnR.

